121332112 has 40 divisors (see below), whose sum is σ = 258144192. Its totient is φ = 54787200.

The previous prime is 121332089. The next prime is 121332121. The reversal of 121332112 is 211233121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25437 + ... + 29827.

Almost surely, 2^121332112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121332112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129072096).

121332112 is an abundant number, since it is smaller than the sum of its proper divisors (136812080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121332112 is a wasteful number, since it uses less digits than its factorization.

121332112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567 (or 4561 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 121332112 is about 11015.0856555907. The cubic root of 121332112 is about 495.0608529751.

Adding to 121332112 its reverse (211233121), we get a palindrome (332565233).

It can be divided in two parts, 121 and 332112, that added together give a palindrome (332233).

The spelling of 121332112 in words is "one hundred twenty-one million, three hundred thirty-two thousand, one hundred twelve".